Perhaps you should try some spelling variations:
luat duoc » luat tuc
hieu van » hieu va, thien van, lieu va
van luat » dan luat, va luat, van xuat
toc sach » hoc sach, doc sach, thuoc sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
duoc va » nuoc va, duc va, duoc ma
va dinh » van dinh, va kinh, va tinh
vai cua » dai cua, lai cua, bai cua
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) ky lang xa hoi. hieu van luat duoc va dinh ((vai cua) OR (hai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky lang xa hoi. hieu van luat duoc va dinh ((vai cua) OR (hai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky lang xa hoi. hieu van luat duoc va dinh ((vai cua) OR (hai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky lang xa hoi. hieu van luat duoc va dinh ((vai cua) OR (hai cua)) triet*.