Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
vat thanh » dat thanh, gat thanh, tat thanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
van hai » van ha, van chat, van hanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang xa hoi. hieu ((van cac) or (van hai)) thuc vat thanh doi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. hieu ((van cac) OR (van hai)) thuc vat thanh doi ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. hieu ((van cac) or (van hai)) thuc vat thanh doi ((cua tre) or (cua tu))*.