Perhaps you should try some spelling variations:
kinh kien » kinh dien, linh kien, dinh kien
toc sach » hoc sach, doc sach, thuoc sach
kien cau » khien cau, hien cau, thien cau
cau tren » cu tren, dau tren, ca tren
qua cam » qua cham, qua cac, qua cai
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
nang xa » nang x, lang xa, nang ma
qua ca » qua cac, qua cua, qua cai
tuc va » truc va, tuc xa, duc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. hieu ((qua cam) OR (qua ca)) ((tuc va) OR (thuc va)) kinh kien cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu ((qua cam) OR (qua ca)) ((tuc va) or (thuc va)) kinh kien cau tren~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. hieu ((qua cam) OR (qua ca)) ((tuc va) or (thuc va)) kinh kien cau tren*.