Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
sach ky » sach y, sach ty, sach kem
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
cac luc » cau luc, coc luc, cac nuoc
sac ky » cac ky, sai ky
nuoc » quoc, duoc, ngoc

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) dang xa hoi. hieu ve ((cac luc) OR (dat nuoc)) va thanh dai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) dang xa hoi. hieu ve ((cac luc) or (dat nuoc)) va thanh dai cua triet~".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) dang xa hoi. hieu ve ((cac luc) or (dat nuoc)) va thanh dai cua triet*.