Perhaps you should try some spelling variations:
ban hanh » ban hang
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
tu truc » tu thuoc, tu trung
cua tre » cua te, cuu tre, cua triet
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: te sach ty nang xa hoi. hieu va ((tu truc) or (cau truc)) ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu va ((tu truc) OR (cau truc)) ban hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va ((tu truc) or (cau truc)) ban hanh vi cua tre*.