Perhaps you should try some spelling variations:
ban thanh » ban hanh
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
ban hang » ngan hang
su sach » so sach, vu sach
cam tuc » cam xuc, cam tu, dam thuc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
y lang » o lang, _ lang, tay lang
vi cua » vai cua, di 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: su sach y lang xa hoi. hieu va ((cam tuc) OR (nam thuc)) ((ban thanh) OR (ban hang)) vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y lang xa hoi. hieu va ((cam tuc) or (nam thuc)) ((ban thanh) OR (ban hang)) vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu va ((cam tuc) or (nam thuc)) ((ban thanh) OR (ban hang)) vi cua triet*.