Perhaps you should try some spelling variations:
thuc dayt » thuc vat, thuc dan, thuc xay
thuc day » thuc dan, thuc vat
nang dai » nang dau, nang tai, lang dai
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
sach va » sach xa, sach ha, sach dao
va nang » van nang, da nang, cam nang
so sach » so sanh, bo sach, co sach
ve cam » ve cham, ve cac, va cam
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach va nang dai hoi. hieu ve cam ((thuc day) or (thuc dayt)) hanh ((vi cua) or (di cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach va nang dai hoi. hieu ve cam ((thuc day) OR (thuc dayt)) hanh ((vi cua) OR (di cua)) viet.
• Adding a wildcard symbol may retrieve word variants: so sach va nang dai hoi. hieu ve cam ((thuc day) or (thuc dayt)) hanh ((vi cua) or (di cua)) viet*.