Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tung tan » tung dan, cung tan, hung tan
tan dung » tran dung, tin dung, van dung
dan chan » dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu manh - thanh tung tan dung cong ((xuan toan) or (((dan chan) OR (dan gian)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - thanh tung tan dung cong ((xuan toan) OR (((dan chan) OR (dan gian)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - thanh tung tan dung cong ((xuan toan) or (((dan chan) OR (dan gian)))) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - thanh tung tan dung cong ((xuan toan) or (((dan chan) OR (dan gian)))) cau*.