Perhaps you should try some spelling variations:
doanh bat » doanh tai, doanh va
cua viet » ca viet, hoa viet, cua vat
toc sach » hoc sach, doc sach, thuoc sach
danh bat » anh bai, dinh ba
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
ve cham » va cham, ve chat, vu cham
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 cham soc va ((danh bat) OR (doanh bat)) cua 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 cham soc va ((danh bat) OR (doanh bat)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) ky dang xa hoi. hieu ve cham soc va ((danh bat) OR (doanh bat)) cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky dang xa hoi. hieu ve cham soc va ((danh bat) OR (doanh bat)) cua viet*.