Perhaps you should try some spelling variations:
cau luoc » cau luc, muu luoc, hau loc
hanh vai » hanh vi, hanh va, hanh tai
hieu van » thien van, lieu va, hieu ve
van hanh » van thanh, ban hanh, van anh
luoc van » luoc can, luoc va, luc van
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
ky cong » ke cong, ly cong, khu cong
cong ha » cong hoa, dong ha, cong tac
hieu va » lieu va, hieu qua
ha hoi » hoa hoi, ha noi, xa hoi
cua te » cua tu

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) or (thu hoach)) ky cong ha hoi. ((hieu van) or (hieu va)) cau luoc van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu hoach)) ky cong ha hoi. ((hieu van) OR (hieu va)) cau luoc van hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky cong ha hoi. ((hieu van) or (hieu va)) cau luoc van hanh vai cua te*.