Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
hanh va » hang va, hanh vi
ve cham » va cham, ve chat, vu cham
ve cai » va cai, ve cac, ve tai
va cuu » va cau, va chu, va huu
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (toc sach)) ky nang xa hoi. hieu ((ve cai) or (ve cham)) xuc va hanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (toc sach)) ky nang xa hoi. hieu ((ve cai) OR (ve cham)) xuc va hanh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (toc sach)) ky nang xa hoi. hieu ((ve cai) or (ve cham)) xuc va hanh va cuu tre*.