Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
ban hanh » ban hang
nang doc » nang luc
hieu va » lieu va, hieu qua
lai cua » dai cua, hai cua, lai chau
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
sach ky » sach y, sach ty, sach kem
hieu ve » hieu van
doc loi » duc loi
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) OR (sac ky)) nang doc loi. ((hieu ve) or (hieu va)) cam xuc ban hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) nang doc loi. ((hieu ve) OR (hieu va)) cam xuc ban hanh lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) nang doc loi. ((hieu ve) or (hieu va)) cam xuc ban hanh lai cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) nang doc loi. ((hieu ve) or (hieu va)) cam xuc ban hanh lai cua tre*.