Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
nhan dan » phan dau, gian dan, nhan tai
dat dang » da dang, dat hang, dai dang
dong dat » dong vat, dong ha, dong tai
dung dat » dung va, dung tai
dan dat » dinh dat, dan hoat

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 - nhan dan dat dang ((dong dat) or (dung dat)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sach - nhan dan dat dang ((dong dat) OR (dung dat)) phan tu.
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - nhan dan dat dang ((dong dat) or (dung dat)) phan tu*.