Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
ho chieu » theo chieu, doi chieu, mot chieu
manh cua » doanh cua, ban cua
tan toan » tan tran, tap toan, van toan
toan cau » 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: ((ho chieu) or (hoc thieu)) sach - canh manh cua ((nhung cong) or (dung trong)) tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - canh manh cua ((nhung cong) OR (dung trong)) tan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sach - canh manh cua ((nhung cong) or (dung trong)) tan toan cau*.