Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
sach tham » sach nha
thanh tri » thanh tra, thanh tai, chinh tri
cua triet » cua viet, su triet, va triet
duc tran » duc tan, duc toan, duc tren
sach tu » sach thu, cach tu, sach ty
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
ve cac » va cac, vien cac

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 tu) or (sach tham)) lang xa hoi. hieu ve cac duc tran thanh tri cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach tu) OR (sach tham)) lang xa hoi. hieu ve cac duc tran thanh tri cua triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach tu) or (sach tham)) lang xa hoi. hieu ve cac duc tran thanh tri cua triet*.