Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » canh tranh, hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
trinh vi » trinh va, trinh ve, trinh viet
vi nhung » voi nhung, vai nhung, va nhung
cong san » cong tac
san toan » van toan, dan toan, manh 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 (((doi chi) OR (doi khi)))) sach - hanh trinh vi nhung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (((doi chi) OR (doi khi)))) sach - hanh trinh vi nhung cong san toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (((doi chi) OR (doi khi)))) sach - hanh trinh vi nhung cong san toan cau*".