Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
cau duc » cao duc, cau luc, chu duc
va danh » va dinh, va dan, va hanh
danh de » hanh de, dan de, dang de
de cua » le cua, te cua, dieu 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 ((nang x) or (lang xa)) hoi. ((hieu ve) or (hieu va)) cau duc va danh de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang x) OR (lang xa)) hoi. ((hieu ve) OR (hieu va)) cau duc va danh de cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang x) or (lang xa)) hoi. ((hieu ve) or (hieu va)) cau duc va danh de cua triet*.