You need to use a font that has these special characters. If you look at fonts on foundries websites it will indicate the characters and symbols available in the various fonts.
There are some methods (depends on your operating system) to find out which glyphs are in the fonts you already have. On a Mac, the features are built-in. In Windows, you might have to download a utility:
You'll have to match Word's font. Most likely your template is using a different font.
Ellis: no, Word has a built-in font stack much like a web page. You can type in English, Chinese, and Malayalam, and you'd never notice the characters are taken from different fonts. Right up until you try to change "the" font for the text, and you see only the English text change!
... For such math symbols, I'm betting on Cambria Math. It's also the default choice (usually even the only) for equations.
I should have emphasized to the OP to select the specific glyphs and see what font was applied to them. For this type of glyphs my starting point is Word. When I copy/pasted the two sample glyphs in Word (I'm on Windows), MS Gothic was applied. A quick check through the fonts I have installed in my system showed other fonts with these glyphs:
Deja Vu Sans
Segoe UI Symbol
Times New Roman
Arial Unicode MS