Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » cua viet, su triet, va triet
doc sach » hoc sach, toc sach, nuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
hanh vai » hanh vi, hanh va, hanh tai
ty nang » ty xang, ty hang, ly nang
hieu vi » hieu voi, hieu va, hieu ve
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ((ty nang) OR (ky nang)) ma hoi. hieu vi pham thuc dan hanh vai cua triet~".
• Adding a wildcard symbol may retrieve word variants: doc sach ((ty nang) OR (ky nang)) ma hoi. hieu vi pham thuc dan hanh vai cua triet*.