Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thanh de » hanh de, thanh do, thanh le
te sach » toc sach
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
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: te sach ky nang xa hoi. ((hieu ve) or (hieu qua)) cam duc van ((thanh de) OR (thanh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. ((hieu ve) OR (hieu qua)) cam duc van ((thanh de) OR (thanh ve)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. ((hieu ve) or (hieu qua)) cam duc van ((thanh de) OR (thanh ve)) cua tre*".