Perhaps you should try some spelling variations:
pham toan » pham tuan, pham tan, phap toan
tang luan » dung luan
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
van nong » van dong, van nang, van cong
tac toan » tap toan, hach toan, tich toan
tam toan » tap toan, tam than, tam thanh
cho chu » cho thue

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

• Performing a fuzzy search may retrieve terms with similar spellings: cho chu xanh - anh tang luan van nong ((tac toan) or (((tam toan) OR (pham toan)))) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chu xanh - anh tang luan van nong ((tac toan) OR (((tam toan) OR (pham toan)))) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cho chu xanh - anh tang luan van nong ((tac toan) or (((tam toan) OR (pham toan)))) cau".
• Adding a wildcard symbol may retrieve word variants: cho chu xanh - anh tang luan van nong ((tac toan) or (((tam toan) OR (pham toan)))) cau*.