Perhaps you should try some spelling variations:
doanh bat » doanh tai, doanh va
chat soc » cham soc, chat hoc, chat doc
toc sach » hoc sach, doc sach, thuoc sach
danh bat » anh bai, dinh ba
tu sach » thu sach, su sach, te sach
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
ca viet » va viet, co viet, hoa viet
soc va » hoc va, loc va, doc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (toc sach)) ky dang xa hoi. hieu ve chat soc va ((danh bat) or (doanh bat)) ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky dang xa hoi. hieu ve chat soc va ((danh bat) OR (doanh bat)) ca viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky dang xa hoi. hieu ve chat soc va ((danh bat) or (doanh bat)) ca viet*.