Perhaps you should try some spelling variations:
thien van » thi van
su triet » su viet, su tien, ve triet
van cham » van chat, van tham, va cham
va hanh » van hanh, va thanh, va danh
te sach » toc sach
nang ma » tang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
sang ma » tang ma, sang tao, mang may
sach v » sach va, sach y, sach 2
soc va » hoc va, loc va, doc va
vi su » va su, ve su, ki su

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: te sach v ((nang xa) OR (((nang ma) OR (sang ma)))) hoi. thien van cham soc va hanh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v ((nang xa) or (((nang ma) OR (sang ma)))) hoi. thien van cham soc va hanh vi su triet~".
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) or (((nang ma) OR (sang ma)))) hoi. thien van cham soc va hanh vi su triet*.