Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thai tuc » thai thuc, thai thuy, thai hoc
cuu tre » cua tre, cau tren, cau treo
danh di » danh du, xanh di, danh dien
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
va thai » van thai, va tai, va tham
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
danh vi » hanh vi, dinh vi, danh va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty lang xa hoi. lieu va thai tuc va ((danh vi) OR (danh di)) ((cuu tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty lang xa hoi. lieu va thai tuc va ((danh vi) OR (danh di)) ((cuu tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty lang xa hoi. lieu va thai tuc va ((danh vi) OR (danh di)) ((cuu tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ty lang xa hoi. lieu va thai tuc va ((danh vi) OR (danh di)) ((cuu tre) or (su triet))*.