Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
ban hanh » ban hang
quoc ban » quoc bao, quoc lan, quoc quan
cam quoc » cac quoc, cao quoc, nam quoc
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
lang xa » lang ha, dang xay, lang van
sach ky » sach y, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (((sac ky) or (sai ky)))) lang xa hoi. hieu van cam quoc ban hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (((sac ky) OR (sai ky)))) lang xa hoi. hieu van cam quoc ban hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (((sac ky) or (sai ky)))) lang xa hoi. hieu van cam quoc ban hanh dai cua tre*.