Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
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
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam
va nay » va ngay, va cay
di cua » dai cua, doi cua, de 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 nam) or (va nay)) tu va thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((va nam) OR (va nay)) tu va thanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((va nam) or (va nay)) tu va thanh di cua tre*.