Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dao » lanh dao, thanh dat, thanh dam
hanh dai » hanh tai, vanh dai, thanh dat
te sach » toc sach
hieu va » hieu qua
lang xa » lang ha, dang xay, lang van
hau loc » huu loc, phau hoc
loc va » hoc va, luc va

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 _ lang xa hoi. ((hieu va) or (lieu va)) hau loc va ((hanh dai) OR (hanh dao)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach _ lang xa hoi. ((hieu va) OR (lieu va)) hau loc va ((hanh dai) OR (hanh dao)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach _ lang xa hoi. ((hieu va) or (lieu va)) hau loc va ((hanh dai) OR (hanh dao)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach _ lang xa hoi. ((hieu va) or (lieu va)) hau loc va ((hanh dai) OR (hanh dao)) cua triet*.