Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
dieu tinh » diep tinh, lieu tinh, dien tinh
manh hung » anh huong
cua nhung » va nhung
hoc dieu » hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc dieu tinh - ((sinh trung) or (manh hung)) cua nhung cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - ((sinh trung) OR (manh hung)) cua nhung cong tan toan ban*.