Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
thong van » trong van, thong va, thong quan
tong van » trong van, tang van, song van
toan cao » toan ban, toan tap

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 - canh tranh cua nhung ((tong van) or (thong van)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh cua nhung ((tong van) OR (thong van)) toan cao*.