Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thuat » trong thuat, vuong thuat, cong thuc
thuat cong » thuat song, thuat trong, thu cong
doi chieu » doc hieu, doi chi, mot chieu
tuong dan » huong dan, tung dan, xuong dan
dung dat » dung va, dung tai
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: doi chieu sach - thanh cong thuat cong ((tuong dan) or (dung dat)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh cong thuat cong ((tuong dan) OR (dung dat)) phan dau*.