Perhaps you should try some spelling variations:
hanh trang » thanh trung, hanh trinh, minh trang
tong cong » trong cong, cong cong, dung cong
thanh lap » thanh san, phan lap, thanh hai
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong tac » cong ty
than cau » toan cau, phan cau, than cap
va tong » va thong, va tuong, va trong

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - ((hanh trang) or (canh tranh)) va tong cong tac ((than cau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((hanh trang) OR (canh tranh)) va tong cong tac ((than cau) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((hanh trang) or (canh tranh)) va tong cong tac ((than cau) or (thanh lap))*.