Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lam » thanh lap, hanh kem, hanh va
cham tuc » nham thuc, pham thuc, tham thuc
dien thi » dien thoai, trien thi, dien tu
doc sach » hoc sach, toc sach, nuoc sach
thi cham » thi hai, toc cham, thi ha
lang xa » lang ha, dang xay, lang van
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, dua tren
tuc va » thuc va, truc va, tuc xa

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: doc sach ky ((nang xa) OR (lang xa)) hoi. dien thi cham tuc va hanh lam ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc sach ky ((nang xa) or (lang xa)) hoi. dien thi cham tuc va hanh lam ((cua tre) OR (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: doc sach ky ((nang xa) or (lang xa)) hoi. dien thi cham tuc va hanh lam ((cua tre) OR (cua triet))*.