Perhaps you should try some spelling variations:
ve triet » va trien
su triet » su viet, su tien
dan vat » dang vat, van vat, dan va
tu sach » thu sach, su sach, tu cach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
te sach » toc sach
cac tuc » cac toc, cac tu, cac tac
tuc va » thuc va, truc va, tuc xa
va dan » ca dan, va dao, va dau

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) or (te sach)) ky dang xa hoi. lieu va cac tuc va dan vat ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky dang xa hoi. lieu va cac tuc va dan vat ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky dang xa hoi. lieu va cac tuc va dan vat ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky dang xa hoi. lieu va cac tuc va dan vat ((su triet) OR (ve triet))*.