Perhaps you should try some spelling variations:
hanh doi » thanh doi, hang doi, hanh moi
hanh noi » ha noi, hanh vi, nang noi
su triet » su viet, su tien, ve triet
bo sach » co sach, hoc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach ky lang xa hoi. hieu qua cac ((xuc va) or (duc va)) ((hanh doi) or (hanh noi)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach ky lang xa hoi. hieu qua cac ((xuc va) OR (duc va)) ((hanh doi) OR (hanh noi)) su triet.
• Adding a wildcard symbol may retrieve word variants: bo sach ky lang xa hoi. hieu qua cac ((xuc va) or (duc va)) ((hanh doi) or (hanh noi)) su triet*.