Perhaps you should try some spelling variations:
vuc nang » cuc nang, chuc nang, van nang
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
cua viet » ca viet, hoa viet, cua vat
su sach » so sach, vu sach
vu nang » va nang, vu dang, v nang
qua cau » quan cau, qua cac, qua ca
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa

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 ((vu nang) or (vuc nang)) ma hoi. hieu qua cau truc van hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((vu nang) OR (vuc nang)) ma hoi. hieu qua cau truc van hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ((vu nang) or (vuc nang)) ma hoi. hieu qua cau truc van hanh vai cua viet*.