Perhaps you should try some spelling variations:
thieu nien » thien nhien
hieu hien » bieu hien, dieu hien, chieu chien
cach thuc » anh thuc, cac thu
cua triet » cua viet, su triet, va triet
thuc van » thuc vat, thuc dan, thuc va
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
tai cua » thai cua, tai cuc, tri cua
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((thieu nien) OR (hieu hien)) cach thuc van hanh tai cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. ((thieu nien) or (hieu hien)) cach thuc van hanh tai cua triet*.