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
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
ky dong » ly dong, ky dang, ky cong
dong ha » dong hoa, dong va, dong hoc
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
luoc va » nuoc va, duoc va, loc va
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 dong ha hoi. ((hieu van) or (hieu va)) cau luoc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu hoach)) ky dong ha hoi. ((hieu van) OR (hieu va)) cau luoc va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky dong ha hoi. ((hieu van) or (hieu va)) cau luoc va hanh vai cua te*.