Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hanh nhan » thanh nhan, danh nhan, anh nhan
theo chu » theo chieu, cho chu, chao chu
nhan dan » phan dau, gian dan, nhan tai
dan hang » ban hang, van hang, dat hang
cong tan » cong tac, cong san, cong ty
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (theo tieu)) xanh - hanh nhan dan hang ((cong tan) OR (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (theo tieu)) xanh - hanh nhan dan hang ((cong tan) OR (cong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chu) or (theo tieu)) xanh - hanh nhan dan hang ((cong tan) OR (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (theo tieu)) xanh - hanh nhan dan hang ((cong tan) OR (cong thanh)) toan cao*.