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