Perhaps you should try some spelling variations:
doanh chien » doan thien, hoach chien, khanh chien
nuoc sach » nguoi sach, cuoc cach, cuon sach
chien cau » chien dau, hien cau, khien cau
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
tam thuc » tham thuc, am thuc, nam thuc
va doanh » van doanh, vay doanh, va danh
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van tam » van tham, van tai, van tan
thuc va » thuc vat, thuc dan, thuc day
cau tre » cau tren, cau treo, cau tra

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nuoc sach) or (hoc sach)) ty nang xa hoi. hieu van tam thuc va doanh chien cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sach) OR (hoc sach)) ty nang xa hoi. hieu van tam thuc va doanh chien cau tre.
• Adding a wildcard symbol may retrieve word variants: ((nuoc sach) or (hoc sach)) ty nang xa hoi. hieu van tam thuc va doanh chien cau tre*.