Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
dung cong » dung trong
tan thanh » tran thanh, tang thanh, toan thanh
ho chieu » hoc thieu, mot chieu, doi chieu
dung cua » dung cho
cong tan » cong tac, cong san, cong thanh
thanh ca » thanh cha, thanh cac, thanh ha

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 (ho chieu)) xanh - sach ((dung cua) or (dung luan)) dung cong tan thanh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) xanh - sach ((dung cua) OR (dung luan)) dung cong tan thanh ca*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) xanh - sach ((dung cua) or (dung luan)) dung cong tan thanh ca*".