Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
hang cong » dang cong, hang nong, bang cong
trinh va » trinh van, trinh vat, trinh ve
ban phan » ban phap, ban nhan, ban chan
ban than » ban thanh, van thanh, ban hang
van phan » van phong, van thanh, luan phan
va hang » van hang, va nang, va lang

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

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