Perhaps you should try some spelling variations:
sang dai » sang tai, lang dai, sang mai
nam thuc » nam thuoc, am thuc, nam thu
sang ky » sang kyo, dang ky, tang ky
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
san ky » van ky, dan ky, ban ky
ve nam » he nam, va nam, le nam
vi cua » vai cua, di cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((san ky) or (sang ky)) sang dai hoi. hieu ve nam thuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((san ky) OR (sang ky)) sang dai hoi. hieu ve nam thuc va hanh vi cua te*.