Perhaps you should try some spelling variations:
thanh diem » thanh liem, thanh vien, thanh nien
hieu hien » bieu hien, dieu hien, chieu chien
diem cau » dieu can
hien cau » khien cau, thien cau, hien cac
cau tre » cau tren, cau treo, cau tra
ky dang » ky nang, ky danh
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ky dan » ky danh, ke dan
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ((ky dan) or (ky dang)) xa hoi. hieu hien cau ((xuc va) OR (tuc va)) thanh diem cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ((ky dan) OR (ky dang)) xa hoi. hieu hien cau ((xuc va) OR (tuc va)) thanh diem cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ((ky dan) or (ky dang)) xa hoi. hieu hien cau ((xuc va) OR (tuc va)) thanh diem cau tre".
• Adding a wildcard symbol may retrieve word variants: tu san ((ky dan) or (ky dang)) xa hoi. hieu hien cau ((xuc va) OR (tuc va)) thanh diem cau tre*.