Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang tai » hang va, dung tai
nhan tai » van tai, toan tai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
ma hoi » mai hoi, xa hoi, ma hoa
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: tu sach ky nang ma hoi. hieu va cao suc manh ((hang tai) or (nhan tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu va cao suc manh ((hang tai) OR (nhan tai)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu va cao suc manh ((hang tai) or (nhan tai)) cua triet*.