Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
va thanh » gia thanh, ban thanh, va tinh
va hanh » van hanh, va danh, ban hanh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang

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