Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
danh dau » lanh dao, hang dau, danh tu
danh sai » dung sai, danh bat, hanh san
chat soc » cham soc, chat hoc, chat doc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tu sach » thu sach, su sach, te sach
soc va » hoc va, loc va, doc va
tu sac » tu cac, tu san, tu bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu sach)) ky lang xa hoi. hieu van chat soc va ((danh sai) OR (danh dau)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky lang xa hoi. hieu van chat soc va ((danh sai) OR (danh dau)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu sach)) ky lang xa hoi. hieu van chat soc va ((danh sai) OR (danh dau)) cua viet*".