Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
can trong » ban trong, ca trong, cad trong
cong danh » cuong danh, cong dan, cong thanh
danh tuan » anh tuan, manh tuan, danh thanh
tuan ban » tuan bang, toan ban, luan 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 - thanh trung ((can trong) or (cay trong)) cong danh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - thanh trung ((can trong) OR (cay trong)) cong danh tuan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - thanh trung ((can trong) or (cay trong)) cong danh tuan ban*.