Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chieu sach » chinh sach, chiet tach, chieu sang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trinh chu » trinh cau, trinh cho, trinh thuc
nang cong » nang song, dang cong, bang cong
chu nang » chuc nang, chua nang, cuu nang
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu sach)) - hanh trinh chu nang cong ((dan toan) OR (van toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu sach)) - hanh trinh chu nang cong ((dan toan) OR (van toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (chieu sach)) - hanh trinh chu nang cong ((dan toan) OR (van toan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu sach)) - hanh trinh chu nang cong ((dan toan) OR (van toan)) tap*.