Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu van » hieu van, chieu sang, chieu xanh
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu van - canh tranh van nhung ((cong ban) OR (cong tan)) than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu van - canh tranh van nhung ((cong ban) OR (cong tan)) than ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu van - canh tranh van nhung ((cong ban) OR (cong tan)) than ban*.