Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
thuong cao » thong cao, thuong chau, thuong mai
truong cao » truong dai
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
gian chau » gian cham, gian cua, gian cac
cong tan » cong tac, cong san, cong thanh
tan gian » tran gian, dan gian, van gian

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) or (doi chieu)) xanh - thanh ((thuong cao) OR (truong cao)) dung cong tan gian chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chieu)) xanh - thanh ((thuong cao) OR (truong cao)) dung cong tan gian chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chieu)) xanh - thanh ((thuong cao) OR (truong cao)) dung cong tan gian chau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chieu)) xanh - thanh ((thuong cao) OR (truong cao)) dung cong tan gian chau*.