Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu vien » hieu hien, hieu viec, thieu nien
tu sach » thu sach, su sach, te sach
van cuu » van cau, van chu, van cu
cuu tre » cua tre, cau tren, cau treo
dang xa » dang xay, lang xa, dang ha
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
xuc va » duc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky dang xa hoi. hieu vien bach ((((xuc va) OR (luc va))) or (tuc va)) thanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang xa hoi. hieu vien bach ((((xuc va) OR (luc va))) OR (tuc va)) thanh van cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky dang xa hoi. hieu vien bach ((((xuc va) OR (luc va))) or (tuc va)) thanh van cuu tre*".