Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh tai » thanh tai, hang tai, han tai
hanh dai » hanh dao, vanh dai, thanh dat
ve chat » va chat, van chat
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa

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 ty nang ma hoi. hieu ((va cham) or (ve chat)) duc va ((hanh dai) or (hanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ma hoi. hieu ((va cham) OR (ve chat)) duc va ((hanh dai) OR (hanh tai)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ma hoi. hieu ((va cham) or (ve chat)) duc va ((hanh dai) or (hanh tai)) cua triet*.