Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
va cham » va tham
cua cua » cua chua, ca cua, qua cua
dau cua » dai cua, day cua, cau cua
va chat » van chat, va phat, cao chat
su sach » so sach
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
tuc va » thuc va, truc va, tuc xa
va dau » va dao

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

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