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 ve » trinh he, trinh va, trinh vi
ve nhung » va nhung, tu nhung
cong san » cong tac
chanh tu » nhanh tu, thanh tu, chinh tu
hanh tu » anh tu, danh tu

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 (theo tieu)) sach - hanh trinh ve nhung cong san ((chanh tu) or (hanh tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) sach - hanh trinh ve nhung cong san ((chanh tu) OR (hanh tu)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) sach - hanh trinh ve nhung cong san ((chanh tu) or (hanh tu))*.