Perhaps you should try some spelling variations:
luan tang » luan nang, lan tang, xuan trang
tang cong » tang cuong, trang cong, dang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu
anh dung » anh dong, sach dung, ung dung
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) or (hoc hien)) sang - ((anh dung) or (anh huong)) luan tang cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) sang - ((anh dung) OR (anh huong)) luan tang cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) sang - ((anh dung) or (anh huong)) luan tang cong manh toan ban*.