Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
trung dap » trung cap, trung dam, trung lap
trung dai » truong dai, truong dao, trung tam
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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