Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh qua » tranh cua, thanh qua, trinh qua
hoc hieu » hoc thieu, hoc hien, doc hieu
qua dung » quang dung, su dung, qua song
than cao » toan cao, thai cao, than cap
cong tu » cong ty, dong tu, cong ti
cong cu » chung cu

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 - canh tranh qua dung ((cong tu) OR (cong cu)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - canh tranh qua dung ((cong tu) OR (cong cu)) than cao".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh qua dung ((cong tu) OR (cong cu)) than cao*.