Perhaps you should try some spelling variations:
phuong van » phung van, phong van, phuong lan
theo chau » theo chu, theo chieu, theo phap
chau tinh » cuu tinh, ha tinh, cua tinh
doanh cua » doanh luan
manh cua » ban cua
van toan » van tuan, van tan, van thanh
toan cao » toan ban, 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: theo chau tinh - hanh ((manh cua) or (doanh cua)) bang phuong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chau tinh - hanh ((manh cua) OR (doanh cua)) bang phuong van toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chau tinh - hanh ((manh cua) or (doanh cua)) bang phuong van toan cao*.