Perhaps you should try some spelling variations:
trung tham » trung tam, trung thanh, trung thang
manh trung » manh tung, thanh trung, manh hung
tham nhung » thi nhung
nhung cong » dung cong, thong cong, hang cong
doc hieu » toc thieu, hoc thieu
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc hien)) xanh - manh trung tham nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) xanh - manh trung tham nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) xanh - manh trung tham nhung cong tac toan tap*.