Perhaps you should try some spelling variations:
quang cuong » quang phuong, tang cuong, quang hung
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tran » thanh trang, thanh toan, thanh tra
quang dung » quang trung, ung dung, cuong dung
hieu manh » chieu xanh, hieu nganh, dieu hanh
bang hang » ban hang, hang hang, nang hang
hang cau » hang dau, hang ca, nhung cau

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 manh) or (chieu tinh)) - thanh tran quang ((quang cuong) OR (quang dung)) bang hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu tinh)) - thanh tran quang ((quang cuong) OR (quang dung)) bang hang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu tinh)) - thanh tran quang ((quang cuong) OR (quang dung)) bang hang cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu tinh)) - thanh tran quang ((quang cuong) OR (quang dung)) bang hang cau*.