Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
manh trung » manh tung, thanh trung, manh hung
thong cong » trong cong, tong cong, thong thong
trung cap » truong cao, trung tam
cap thong » cap tong, chap thuong, phap thong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (chieu xanh)) - manh trung cap thong cong tan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu xanh)) - manh trung cap thong cong tan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu xanh)) - manh trung cap thong cong tan ((toan cau) or (toan ban))*.