Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
cuon sach » duong sach, cuoc cach, co sach
vat thanh » dat thanh, gat thanh, tat thanh
phan cua » nhan cua, than cua, phat cua
te sach » toc sach
vu cham » va cham, vu kham, tu cham
cua tre » cua te, cuu tre, cua triet
ve cai » va cai, ve cac, ve tai
x hoi » xa hoi, o hoi, x ho

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) or (cuon sach)) ky nang x hoi. hieu ((ve cai) or (vu cham)) thuc vat thanh phan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (cuon sach)) ky nang x hoi. hieu ((ve cai) OR (vu cham)) thuc vat thanh phan cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (cuon sach)) ky nang x hoi. hieu ((ve cai) or (vu cham)) thuc vat thanh phan cua tre*.