Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
huong cua » dung cua
cua thong » cua thuong, cua khong, cua tong
hoc hieu » hoc thieu, hoc hien, doc hieu
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: hoc hieu manh - anh huong cua thong ((cong tan) OR (cong thanh)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - anh huong cua thong ((cong tan) OR (cong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - anh huong cua thong ((cong tan) OR (cong thanh)) toan cao*.