Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
canh nhung » anh nhung, hanh nhung, doanh nhung
doi chieu » doc hieu, ho chieu, mot chieu
cam nhung » cam hung, nam nhung, tham nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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 (doi chi)) sach - hanh trung ((canh nhung) or (cam nhung)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - hanh trung ((canh nhung) OR (cam nhung)) cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - hanh trung ((canh nhung) or (cam nhung)) cong tac toan cau*.