Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
nang mai » nang ma, nang tai, lang mai
hanh vai » hanh vi, hanh va, hanh tai
ve cham » va cham, ve chat, vu cham
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
so sach » so sanh, bo sach, co sach
mai hoi » mai khoi, dai hoi, lai hoi
sach v » sach va, sach y, sach 2
ve cac » va cac, vien cac
ve cam » va cam, ve cai, ve cau
v nang » va nang, vu nang, van nang

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