Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dat » thanh san, thanh hai, thanh van
ban thanh » ban hanh, ban hang
sach ky » sac ky, sach y, sach ty
dat cua » dai cua, day cua, mat cua
nam xua » nam cua, nam mua, nam qua
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, mang may
nam xuc » cam xuc, nam thuc, nam duoc

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