Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
cach thuc » anh thuc, cac thu
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
hanh dai » hanh tai, hanh dao, vanh dai
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
dai su » dai sua, dai so, dan su
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. ((thien nhien) OR (hieu hien)) cach thuc dan hanh dai su triet~.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. ((thien nhien) or (hieu hien)) cach thuc dan hanh dai su triet*.