Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung thang » hung thang, cung thang, dung thuong
toc chieu » toc thieu, doc hieu, hoc thieu
phan cong » thanh cong
son phan » so phan, bon phan, mon phan
dung dat » dung va, dung tai
phan dau » phan tu, hang dau
anh son » anh dong, tinh son

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu sach - anh son phan cong ((dung thang) OR (dung dat)) phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc chieu sach - anh son phan cong ((dung thang) OR (dung dat)) phan dau".
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - anh son phan cong ((dung thang) OR (dung dat)) phan dau*.