Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
thanh tung » thanh cong
tung thanh » trung thanh, tang thanh, dung thanh
hieu cach » hieu cac, chieu sach, biet cach
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
hieu ca » hieu cac, hieu cua, hieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (hieu ca)) - thanh tung thanh trong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (hieu ca)) - thanh tung thanh trong cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (hieu ca)) - thanh tung thanh trong cong tan toan cao*.