Perhaps you should try some spelling variations:
vuc nang » cuc nang, chuc nang, van nang
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
qua cau » quan cau, qua cac, qua ca
ca viet » va viet, co viet, hoa viet
vu nang » va nang, vu dang, vu bang
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, van nang, voi nang
lai ca » lai cua, lai cam, loai ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((((v nang) OR (vu nang))) or (vuc nang)) ma hoi. hieu qua cau truc va hanh lai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((((v nang) OR (vu nang))) OR (vuc nang)) ma hoi. hieu qua cau truc va hanh lai ca viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((((v nang) OR (vu nang))) or (vuc nang)) ma hoi. hieu qua cau truc va hanh lai ca viet".
• Adding a wildcard symbol may retrieve word variants: su sach ((((v nang) OR (vu nang))) or (vuc nang)) ma hoi. hieu qua cau truc va hanh lai ca viet*.