Perhaps you should try some spelling variations:
danh khien » danh kien, doanh chien, dinh kien
nuoc sach » nguoi sach, cuoc cach, cuon sach
khien cau » hien cau, thien cau, khien canh
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
tam thuc » tham thuc, am thuc, nam thuc
cau tren » cu tren, dau tren, ca tren
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
va danh » va dinh, va dan, va hanh

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 danh khien cau tren~.
• 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 danh khien cau tren*.