Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
di cua » dai cua, doi cua, do cua
de cua » te cua, dieu cua
le cua » ly cua

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 tu nang xa hoi. hieu ve pham duc va thanh ((di cua) OR (((de cua) OR (le cua)))) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu ve pham duc va thanh ((di cua) or (((de cua) OR (le cua)))) triet~".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu ve pham duc va thanh ((di cua) or (((de cua) OR (le cua)))) triet*.