Perhaps you should try some spelling variations:
hanh dao » lanh dao, thanh dat, thanh dam
te sach » toc sach
dao cua » dai cua, day cua, dan cua
va hanh » van hanh, va thanh, va danh
dam tuc » dam thuc, dao tuc, nam thuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
dam tu » nam tu, cam tu, tam tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (su sach)) ky lang xa hoi. hieu ve ((dam tuc) or (dam tu)) va hanh dao cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (su sach)) ky lang xa hoi. hieu ve ((dam tuc) OR (dam tu)) va hanh dao cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (su sach)) ky lang xa hoi. hieu ve ((dam tuc) or (dam tu)) va hanh dao cua tre*.