Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuoc sach » hoc sach, nuoc sach, thuat sach
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
thu sach » tu sach, thuat sach, thu hoach
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (((thu sach) OR (thuoc sach)))) - hanh tang cua dung cong tac doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (((thu sach) OR (thuoc sach)))) - hanh tang cua dung cong tac doan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (((thu sach) OR (thuoc sach)))) - hanh tang cua dung cong tac doan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (((thu sach) OR (thuoc sach)))) - hanh tang cua dung cong tac doan cau*.