Perhaps you should try some spelling variations:
phap tinh » phap sinh, phap tieng, tap tinh
phap tang » phap nang, phap tieng
tang cuan » tang luan, tang quan, tang cuong
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((phap tinh) OR (phap tang)) - anh ((tang cua) OR (tang cuan)) trong cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((phap tinh) OR (phap tang)) - anh ((tang cua) or (tang cuan)) trong cong tac toan cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((phap tinh) OR (phap tang)) - anh ((tang cua) or (tang cuan)) trong cong tac toan cao*.