Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham tuc » nham thuc, pham thuc, tham thuc
bo sach » co sach, hoc sach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xa hanh » xa thanh, xa khanh, va hanh
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sach) or (hoc anh)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc xa hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sach) OR (hoc anh)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc xa hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sach) or (hoc anh)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc xa hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((bo sach) or (hoc anh)) ky ((nang xa) OR (lang xa)) hoi. hieu ve cham tuc xa hanh vi cua triet*.