Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh ve, nhanh vi
thanh va » thanh van, hanh va, thanh ha
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
xuc gia » duc gia, luc gia, tuc gia
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang xa hoi. hieu ((van cau) or (van nam)) xuc gia ((thanh vi) OR (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang xa hoi. hieu ((van cau) OR (van nam)) xuc gia ((thanh vi) OR (thanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky nang xa hoi. hieu ((van cau) or (van nam)) xuc gia ((thanh vi) OR (thanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang xa hoi. hieu ((van cau) or (van nam)) xuc gia ((thanh vi) OR (thanh va)) cua tre*.