Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hien cach » hien cac, thien hach, khien canh
hieu cach » hieu cac, chieu sach, hieu ca
trung cua » truong cua, trung tuan, trung cap
dang cong » dung cong
tan thanh » tran thanh, tang thanh, toan thanh
thanh hai » thanh phan, thanh hoa, thanh san

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

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