Perhaps you should try some spelling variations:
nang doi » nang noi, hang doi, nang dong
nang doc » nang luc
ve triet » va trien, su triet
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
cac tuc » cac toc, cac tu, cac tac

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