Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
san thanh » ban thanh, van thanh, dan thanh
son thanh » ban thanh, van thanh
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu quang - hanh ((tang cua) or (mang cua)) nhung cong ((san thanh) OR (son thanh)) chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - hanh ((tang cua) OR (mang cua)) nhung cong ((san thanh) OR (son thanh)) chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu quang - hanh ((tang cua) or (mang cua)) nhung cong ((san thanh) OR (son thanh)) chau".
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh ((tang cua) or (mang cua)) nhung cong ((san thanh) OR (son thanh)) chau*.