Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh mang » nhanh mang, hanh trang, nhanh lang
hang cong » dang cong, hang nong, bang cong
tac thanh » bac thanh, cac thanh, tcc thanh
thanh hai » thanh phan, thanh hoa, thanh san
cong tac » cong ty
mang va » mang vua, hang va, bang va
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: theo ((chieu sach) OR (chiet tach)) - hanh mang va hang cong tac thanh hai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - hanh mang va hang cong tac thanh hai".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - hanh mang va hang cong tac thanh hai*.