Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cau cua » cau qua, cu cua, chat cua
tu sach » thu sach, su sach, te sach
su cham » su pham, tu cham, vu cham
hieu su » hieu sau, tieu su, hieu so
nang xa » nang x, lang xa, nang ma
luc va » duc va, tuc va
sach v » sach va, sach y, sach 2
loc va » hoc va
ca cua » co cua
v nang » va nang, vu nang, van nang

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 v nang xa hoi. hieu su cham ((luc va) or (loc va)) ((cau cua) OR (ca cua)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu su cham ((luc va) OR (loc va)) ((cau cua) OR (ca cua)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach v nang xa hoi. hieu su cham ((luc va) or (loc va)) ((cau cua) OR (ca cua)) cua viet*".