Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
tang van » dang van, hoang van, trong van
trang va » tran van, hang va
toan cau » toan cao, toan ban, toan tap
chu van » cuu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu han) or (chu van)) - hanh ((tang van) or (trang va)) nhung cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu han) OR (chu van)) - hanh ((tang van) OR (trang va)) nhung cong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chu han) or (chu van)) - hanh ((tang van) or (trang va)) nhung cong manh toan cau*.