Perhaps you should try some spelling variations:
dang xay » dang van, van xay
cac truc » cau truc, cac tru, cac trung
va triet » va thiet, va trien, ve triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
dang xa » lang xa, dang ha, dang va
truc va » thuc va, thuc vat, trung va
dao vai » dao van, dao va, dao bai
va dao » ca dao
vai va » mai va, dai va, hai va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((dang xa) OR (dang xay)) hoi. lieu va cac truc va dao vai va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((dang xa) OR (dang xay)) hoi. lieu va cac truc va dao vai va triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((dang xa) OR (dang xay)) hoi. lieu va cac truc va dao vai va triet*.