Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, hanh trinh, minh trang
mot chieu » doi chieu, ho chieu
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: ((mot chieu) or (hoc hien)) xanh - ((hanh trang) or (canh tranh)) cua nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc hien)) xanh - ((hanh trang) OR (canh tranh)) cua nhung cong tac toan ban.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (hoc hien)) xanh - ((hanh trang) or (canh tranh)) cua nhung cong tac toan ban*.