Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
viec cam » viec lam, viec cua, viec va
sach ty » sach tu, sach thu, xach tay
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach y)) ((nang ma) or (sang ma)) hoi. hieu viec cam xuc va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) ((nang ma) OR (sang ma)) hoi. hieu viec cam xuc va hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) ((nang ma) or (sang ma)) hoi. hieu viec cam xuc va hanh vai cua viet*.