Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trung cam » trung tam, trung cap, trung ca
trung nam » trung tam, trong nam, trung cap
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cao » toan cao, thai cao, than cap

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 ((trung cam) or (trung nam)) nhung ((cong dan) OR (cong tan)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - hanh ((trung cam) OR (trung nam)) nhung ((cong dan) OR (cong tan)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sang - hanh ((trung cam) or (trung nam)) nhung ((cong dan) OR (cong tan)) than cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh ((trung cam) or (trung nam)) nhung ((cong dan) OR (cong tan)) than cao*.