Perhaps you should try some spelling variations:
hang tai » hang va, dung tai
su sach » so sach, vu sach
tai duc » tai cuc, mai duc, tai du
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
duc tre » duoc tren, duc tien
xuc va » duc va, tuc va, luc va
loc va » hoc va, luc va
ky anh » ky danh, ly anh, ty anh

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 anh) or (ky dang)) xa hoi. hieu va cac ((xuc va) or (loc va)) hang tai duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky anh) OR (ky dang)) xa hoi. hieu va cac ((xuc va) OR (loc va)) hang tai duc tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky anh) or (ky dang)) xa hoi. hieu va cac ((xuc va) or (loc va)) hang tai duc tre*.