Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va hanh » va thanh, va danh, ban hanh
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.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y lang xa hoi. ((hieu ve) or (lieu va)) cau luc ((va hanh) OR (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang xa hoi. ((hieu ve) OR (lieu va)) cau luc ((va hanh) OR (van hanh)) vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang xa hoi. ((hieu ve) or (lieu va)) cau luc ((va hanh) OR (van hanh)) vi cua triet*".