Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van tham » van thanh, van tuan, van chat
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty nang xa hoi. hieu ((va cham) or (van tham)) ((luc va) OR (tuc va)) hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty nang xa hoi. hieu ((va cham) OR (van tham)) ((luc va) OR (tuc va)) hanh vi cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang xa hoi. hieu ((va cham) or (van tham)) ((luc va) OR (tuc va)) hanh vi cua tu".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang xa hoi. hieu ((va cham) or (van tham)) ((luc va) OR (tuc va)) hanh vi cua tu*.