Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
vu cham » vu kham, tu cham, qua cham
va cham » va chat, va tham
dau cua » dai cua, day cua, cau cua
cua cua » cua chua, ca cua, qua cua
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
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: tu sach y nang xa hoi. hieu ((vu cham) OR (va cham)) luc va dau cua cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. hieu ((vu cham) OR (va cham)) luc va dau cua cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((vu cham) OR (va cham)) luc va dau cua cua viet*.