Perhaps you should try some spelling variations:
thieu nien » thien nhien
cua triet » cua viet, su triet, va triet
nien cac » vien cac, dien cac, bien cac
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly vang » ly hang, ly van, ly quang
mai hoi » mai khoi, dai hoi, lai hoi
cac tuc » cac toc, cac tu, cac tac
tuc van » thuc van, truc van, tuc va
vi cua » vai cua, di cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly vang ((xa hoi) OR (mai hoi)). thieu nien cac tuc van hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: te sach ly vang ((xa hoi) OR (mai hoi)). thieu nien cac tuc van hanh vi cua triet*.