Perhaps you should try some spelling variations:
thi hang » thi hanh, thi nang, thi hong
ban hanh » ban hang
su sach » so sach, vu sach
ty hang » ly hang, ty xang, thu hang
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
hanh ve » hanh vi, hanh va, hanh kem
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
ve cua » le cua, de cua, te cua

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 ((ty hang) or (thi hang)) xa hoi. hieu va cam xuc ban hanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty hang) OR (thi hang)) xa hoi. hieu va cam xuc ban hanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty hang) or (thi hang)) xa hoi. hieu va cam xuc ban hanh ve cua tre*.