Perhaps you should try some spelling variations:
thi hong » thi cong, thi phuong, thi nang
thi hanh » thi thanh
ban hang » ngan hang
hang van » hoang van, hang va, dang van
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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 ((thi hong) OR (thi hanh)) xa hoi. hieu va cam xuc ban hang van ((cua tre) or (co truyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thi hong) OR (thi hanh)) xa hoi. hieu va cam xuc ban hang van ((cua tre) OR (co truyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((thi hong) OR (thi hanh)) xa hoi. hieu va cam xuc ban hang van ((cua tre) or (co truyen))".
• Adding a wildcard symbol may retrieve word variants: su sach ((thi hong) OR (thi hanh)) xa hoi. hieu va cam xuc ban hang van ((cua tre) or (co truyen))*.