Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thieu xanh » chieu xanh, hieu manh, thien danh
cong ngang » cong quang, cong lang, cong nong
thien anh » thien danh, tien anh, thien thanh
cong nhan » cong nhat, cong thanh, cong san
toan ban » van ban
toan va » doan va, tran van, toan tap

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 xanh) or (thien anh)) - thanh toan va nhung ((cong ngang) OR (cong nhan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - thanh toan va nhung ((cong ngang) OR (cong nhan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien anh)) - thanh toan va nhung ((cong ngang) OR (cong nhan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien anh)) - thanh toan va nhung ((cong ngang) OR (cong nhan)) toan ban*.