Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau treo » cau tren, cau triet, cau trieu
cau theo » cau thi, cau tao
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cac » van hac, van cau, van bac
xuc va » tuc va, luc 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 lang xa hoi. hieu van cac ((xuc va) or (duc va)) hanh vi ((cau treo) OR (cau theo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu van cac ((xuc va) OR (duc va)) hanh vi ((cau treo) OR (cau theo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky lang xa hoi. hieu van cac ((xuc va) or (duc va)) hanh vi ((cau treo) OR (cau theo))*".