Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
hieu tinh » chieu tinh, lieu tinh, kieu tinh
chau tinh » cuu tinh, ha tinh, cua tinh
manh hung » anh huong
hung chua » cung chua, hung chu, chung chuan
chua nang » chuc nang, chua xang, kha nang
cong vang » cong lang, cong ngang, cong san
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: doc ((hieu tinh) or (chau tinh)) - manh hung chua nang ((cong vang) OR (cong quang)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu tinh) OR (chau tinh)) - manh hung chua nang ((cong vang) OR (cong quang)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu tinh) or (chau tinh)) - manh hung chua nang ((cong vang) OR (cong quang)) toan ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu tinh) or (chau tinh)) - manh hung chua nang ((cong vang) OR (cong quang)) toan ban*.