Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh
ban hang » ngan hang
sach ky » sac ky, sach y, sach ty
te sach » toc sach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
cac lo » cac lop, cac co, cac bo
vi cua » vai cua, di cua
ve cac » va cac, vien cac

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 ky ((nang xa) OR (nang x)) hoi. hieu ve cac lo ((ban thanh) or (ban hang)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang x)) hoi. hieu ve cac lo ((ban thanh) OR (ban hang)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) OR (nang x)) hoi. hieu ve cac lo ((ban thanh) or (ban hang)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) OR (nang x)) hoi. hieu ve cac lo ((ban thanh) or (ban hang)) vi cua triet*.