Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
van nang » van quang, van ban, van dong
van dung » van dong, xay dung, tin dung
su sach » so sach, vu sach
tai cua » thai cua, tai cuc, tri cua
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
qua cam » qua cham, qua cac, qua ca
va nang » da nang, cam nang, kha nang
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 (vu khach)) ((van nang) or (va nang)) xa hoi. hieu qua cam duc van dung tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ((van nang) OR (va nang)) xa hoi. hieu qua cam duc van dung tai cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ((van nang) or (va nang)) xa hoi. hieu qua cam duc van dung tai cua te*.