Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
thanh da » thanh dat, thanh dam, thanh dan
va thanh » gia thanh, ban thanh, va tinh
ve phan » va phan, ke phan, ve phat
sach tu » sach thu, cach tu, sach uu
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach thu, xach tay
ve pham » vi pham, v pham, ve phat
duy va » duy vat, duy van, day va
da su » dan su, dat su, va su

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 tu) or (sach ty)) nang xa hoi. hieu ((ve pham) OR (ve phan)) duy va thanh da su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach ty)) nang xa hoi. hieu ((ve pham) OR (ve phan)) duy va thanh da su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tu) or (sach ty)) nang xa hoi. hieu ((ve pham) OR (ve phan)) duy va thanh da su triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) or (sach ty)) nang xa hoi. hieu ((ve pham) OR (ve phan)) duy va thanh da su triet*.