Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong thanh » dong thanh, cong trinh, cong tan
thi chieu » thi chien, thi hieu, theo chieu
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
cong tac » cong ty
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (thi chieu)) xanh - hanh tranh va nhung ((cong tac) or (cong thanh)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi chieu)) xanh - hanh tranh va nhung ((cong tac) OR (cong thanh)) than tap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) xanh - hanh tranh va nhung ((cong tac) or (cong thanh)) than tap*.