Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dung tang » dung thang, dung trang, dung dang
ho chieu » theo chieu, hoc thieu, doi chieu
phan lap » phan dau
tung va » trung va, tuong va, dung va
tung » tcung
ung » cung
dung » dcung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung va ung dung tang ((thanh san) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung va ung dung tang ((thanh san) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung va ung dung tang ((thanh san) or (phan lap))*.