Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
qua cam » qua cham, qua cac, qua cai
nang xa » nang x, lang xa, nang ma
qua ca » qua cac, qua cua, qua cai
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua

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 ky nang xa hoi. hieu ((qua cam) OR (qua ca)) xuc ((ban thanh) or (va dan)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((qua cam) OR (qua ca)) xuc ((ban thanh) OR (va dan)) vi cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu ((qua cam) OR (qua ca)) xuc ((ban thanh) or (va dan)) vi cua viet*".