Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
te sach » toc sach
canh xa » canh va, canh tac, canh tay
hieu va » lieu va, hieu qua
cho hoc » co hoc, khoa hoc
va danh » va dinh, va hanh, dia danh
vai cua » dai cua, hai cua, lai cua
va cho » van cho, va co, va che
va dan » ca dan, va dao, va dau

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 y canh xa hoi. hieu va cho hoc ((va danh) or (va dan)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y canh xa hoi. hieu va cho hoc ((va danh) OR (va dan)) vai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sach y canh xa hoi. hieu va cho hoc ((va danh) or (va dan)) vai cua triet*.