Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
manh trung » manh tung, thanh trung, manh hung
cong thanh » dong thanh, cong trinh, truong thanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tan » cong tac, cong san, cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu quang - manh trung cua nhung ((cong thanh) or (cong tan)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu quang - manh trung cua nhung ((cong thanh) OR (cong tan)) van ban.
• Adding a wildcard symbol may retrieve word variants: toc thieu quang - manh trung cua nhung ((cong thanh) or (cong tan)) van ban*.