Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
cau luoc » cau luc, muu luoc, hau loc
hanh vai » hanh vi, hanh va, hanh tai
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 lang » ky nang, ky dang, ky tang
lang ha » long ha
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 lang ha hoi. ((hieu quan) or (hieu qua)) 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 lang ha hoi. ((hieu quan) OR (hieu qua)) cau luoc van hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu hoach)) ky lang ha hoi. ((hieu quan) or (hieu qua)) cau luoc van hanh vai cua te*.