Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trung » thanh trung, hanh trang, manh trung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van ban
ho hieu » ho chieu, hoi hieu, nho hieu
dai ung » dan ung, di ung, lai ung

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 trung ((dai ung) or (dap ung)) cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu quang - hanh trung ((dai ung) OR (dap ung)) cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu quang - hanh trung ((dai ung) or (dap ung)) cong manh toan ban*.