Perhaps you should try some spelling variations:
vuc nang » cuc nang, vu nang, chuc nang
hanh lai » hanh lam, hanh tai, thanh lap
su sach » so sach, vu sach
ca truc » cau truc, ca tru, ba truc
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, hoa viet
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, xa hoi, ma hoa
qua ca » qua cac, qua cua, qua cai
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 (vuc nang)) ma hoi. hieu qua ca truc va hanh lai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vuc nang)) ma hoi. hieu qua ca truc va hanh lai ca viet.
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (vuc nang)) ma hoi. hieu qua ca truc va hanh lai ca viet*.