Perhaps you should try some spelling variations:
ban hang » ngan hang
hieu van » hieu va, thien van, hieu ve
nang han » nang phan, nang hang, nang hanh
sach ky » sac ky, sach y, sach kem
hang vi » hang va, hanh vi, hang di
xuc ban » duc ban, cuc ban, quoc ban
han hoi » phan hoi, dan hoi, van hoi
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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 ky) or (sach ty)) nang han hoi. ((hieu van) OR (lieu va)) cam xuc ban hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) nang han hoi. ((hieu van) OR (lieu va)) cam xuc ban hang vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach ty)) nang han hoi. ((hieu van) OR (lieu va)) cam xuc ban hang vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach ty)) nang han hoi. ((hieu van) OR (lieu va)) cam xuc ban hang vi cua tre*.