Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
hanh di » hanh de, hang di, danh di
xuc ban » duc ban, cuc ban, quoc ban
cao xuc » cam xuc, cao duc, cao suc
te sach » toc sach
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
nang ma » tang ma, sang ma, nang cao
va cao » va cac, va co, va dao

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 ky ((nang ma) or (lang xa)) hoi. hieu va cao xuc ban ((hanh di) OR (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang ma) OR (lang xa)) hoi. hieu va cao xuc ban ((hanh di) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang ma) or (lang xa)) hoi. hieu va cao xuc ban ((hanh di) OR (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang ma) or (lang xa)) hoi. hieu va cao xuc ban ((hanh di) OR (hanh vi)) cua triet*.