Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
cong cong » cong dong, trong cong, dung cong
cong tac » cong ty
tac cong » tac chong, cac cong, tac dong
cong tan » cong san, cong thanh, cong ty
tan chan » dan chan, ban chan, can chan
chan cao » chan cho, chat cao, chay cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) OR (theo chieu)) xanh - thanh cong tac cong cong tan chan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) OR (theo chieu)) xanh - thanh cong tac cong cong tan chan cao".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) OR (theo chieu)) xanh - thanh cong tac cong cong tan chan cao*.