Perhaps you should try some spelling variations:
thanh tung » thanh cong
chu manh » ho manh, chu han, thu minh
vat dung » van dung, viet dung, mat duong
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cao » toan ban, toan tap
chu van » cuu van, chu han
va dung » van dung, va duong, va ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chu manh) or (chu van)) - thanh tung ((va dung) or (vat dung)) cong ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chu manh) OR (chu van)) - thanh tung ((va dung) OR (vat dung)) cong ban toan cao.
• Adding a wildcard symbol may retrieve word variants: chao ((chu manh) or (chu van)) - thanh tung ((va dung) or (vat dung)) cong ban toan cao*.