Perhaps you should try some spelling variations:
chuyen dung » chuyen dong, tuyen dung, huyen dong
thieu sach » thien hach, hieu cach, theo sach
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
chuan dung » chan dung, chua dong, thuat dung
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than tap » toan tap, han tap, phan tap

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

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