Perhaps you should try some spelling variations:
thanh trung » thanh tung
dung thang » hung thang, cung thang, dung thuong
trung tac » trung tam, trong tac, trung tai
phuc toan » phuc thanh, duc toan, phap toan
phap phan » phap phat, phap hoan, phap luan
toc tien » hoc tien, toc mien, toc stieng
tac dung » sach dung, xay dung, tin dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc tien thinh - thanh trung tac dung thang ((phuc toan) or (phap phan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc tien thinh - thanh trung tac dung thang ((phuc toan) OR (phap phan)) cao.
• Adding a wildcard symbol may retrieve word variants: toc tien thinh - thanh trung tac dung thang ((phuc toan) or (phap phan)) cao*.