Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
va thanh » gia thanh, ban thanh, va tinh
hai cua » thai cua, dai cua, hoi cua
lai cua » dai cua, lai chau, thai cua
thuc va » thuc vat, thuc dan, thuc day
so sach » so sanh, bo sach, co sach
sach vu » sach va, sach tu, sach uu
vu nang » vuc nang, va nang, vu dang
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai

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 vu nang mai khoi. hieu ((ve cam) OR (ve cac)) thuc va thanh ((lai cua) or (hai cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach vu nang mai khoi. hieu ((ve cam) OR (ve cac)) thuc va thanh ((lai cua) OR (hai cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach vu nang mai khoi. hieu ((ve cam) OR (ve cac)) thuc va thanh ((lai cua) or (hai cua)) viet".
• Adding a wildcard symbol may retrieve word variants: so sach vu nang mai khoi. hieu ((ve cam) OR (ve cac)) thuc va thanh ((lai cua) or (hai cua)) viet*.