Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » manh cua
doanh cua » doanh luan
cong vang » cong lang, cong ngang, cong san
thanh cau » thanh chau, thanh mau, nhanh cau
hoc hieu » hoc thieu, hoc hien, doc hieu

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 - canh ((tranh cua) or (doanh cua)) nhung ((cong vang) OR (cong quang)) thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh ((tranh cua) OR (doanh cua)) nhung ((cong vang) OR (cong quang)) thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - canh ((tranh cua) or (doanh cua)) nhung ((cong vang) OR (cong quang)) thanh cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh ((tranh cua) or (doanh cua)) nhung ((cong vang) OR (cong quang)) thanh cau*.