Perhaps you should try some spelling variations:
thanh chong » thanh chuong, thanh cong, nhanh chong
chong cong » cong cong, thong cong, cuong cong
hieu sach » chieu sach, hieu cach, dien sach
doc hieu » toc thieu, hoc thieu, hoc hien
anh quan » ban quan, anh nhan, anh quoc
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cao » doanh cao, toan cao, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - ((anh quan) or (anh tuan)) thanh chong cong tac doan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - ((anh quan) OR (anh tuan)) thanh chong cong tac doan cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - ((anh quan) or (anh tuan)) thanh chong cong tac doan cao*.