Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
cong danh » cuong danh, cong dan, cong thanh
danh toan » manh toan, anh toan, dan toan
cap dung » ap dung, chan dung, cach dung
cao dung » cao dang, cao dong, cao ung
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 ((hieu lang) or (chieu sang)) - thanh trung ((cap dung) OR (cao dung)) cong danh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (chieu sang)) - thanh trung ((cap dung) OR (cao dung)) cong danh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (chieu sang)) - thanh trung ((cap dung) OR (cao dung)) cong danh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (chieu sang)) - thanh trung ((cap dung) OR (cao dung)) cong danh toan ban*.