Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
manh toan » anh tuan, tinh toan
khao cuu » cham cuu, chao chu, kho cua
toan cua » than cua, tan cua, doanh cua
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: khao cuu van - thanh toan cua nhung cong ((dan toan) or (manh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: khao cuu van - thanh toan cua nhung cong ((dan toan) OR (manh toan)) tap.
• Adding a wildcard symbol may retrieve word variants: khao cuu van - thanh toan cua nhung cong ((dan toan) or (manh toan)) tap*.