Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
tung tay » vung tay, dung tay, tung bay
nung tay » vung tay, dung tay, nguong tay
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: theo ((chieu sach) or (chinh sach)) - thanh ((tung tay) OR (nung tay)) nhung cong doan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - thanh ((tung tay) OR (nung tay)) nhung cong doan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - thanh ((tung tay) OR (nung tay)) nhung cong doan phan dau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - thanh ((tung tay) OR (nung tay)) nhung cong doan phan dau*.