Perhaps you should try some spelling variations:
bien tinh » bi tinh, yen tinh, diep tinh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
tang luan » dung luan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
so bien » mot bien

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

• Performing a fuzzy search may retrieve terms with similar spellings: so bien tinh - hanh ((((trung cua) or (trung cap))) or (tang luan)) trong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so bien tinh - hanh ((((trung cua) OR (trung cap))) OR (tang luan)) trong cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: so bien tinh - hanh ((((trung cua) or (trung cap))) or (tang luan)) trong cong dan toan cao*.