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
qua cau » quan cau, qua cac, qua ca
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
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 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 (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 (vuc nang)) ma hoi. hieu qua cau truc va hanh lai ca viet*.