Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap
mang va » mang vua, hang va, dang va
bang va » hang va, ban va, trang va

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 sang - hanh ((mang va) or (bang va)) nhung ((cong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh ((mang va) OR (bang va)) nhung ((cong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh ((mang va) or (bang va)) nhung ((cong dan) or (cong san)) toan cao*.