Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
cac xuc » cam xuc, cac nuoc, chat xuc
dan thi » dang thi, tran thi, dinh thi
dau thi » cau thi, dao thi, dam thi
van cac » van hac, van cau, van bac
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc 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: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu van cac xuc va ((dau thi) OR (dan thi)) cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang xa hoi. hieu van cac xuc va ((dau thi) or (dan thi)) cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu van cac xuc va ((dau thi) or (dan thi)) cuu tre*.