Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung can » trung cap, trung van, trong can
can trong » cay trong, ban trong, ca trong
cong tac » cong ty
than cau » toan cau, than cap, thanh chau
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 - thanh trung can trong cong tac ((than cau) or (((phan cau) or (phan dau))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh trung can trong cong tac ((than cau) OR (((phan cau) OR (phan dau)))).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh trung can trong cong tac ((than cau) or (((phan cau) or (phan dau))))*.