Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
doi chieu » doi chi, ho chieu, mot chieu
cong cong » cong dong, trong cong, dung cong
doc hieu » toc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (((doc hieu) or (hoc thieu)))) tinh - thanh tung cua cong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (((doc hieu) OR (hoc thieu)))) tinh - thanh tung cua cong cong tan toan cao*.