Perhaps you should try some spelling variations:
van nang » van quang, van ban, van dong
su sach » so sach, vu sach
hieu va » lieu va
va lang » va nang, hoa lang
lang vi » hang vi, lang va, sang vi
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, voi nang
vi cua » vai cua, di cua
nuoc » quoc, duoc, ngoc

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 ((v nang) or (van nang)) xa hoi. ((hieu va) or (hieu qua)) dat nuoc va lang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (van nang)) xa hoi. ((hieu va) OR (hieu qua)) dat nuoc va lang vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (van nang)) xa hoi. ((hieu va) or (hieu qua)) dat nuoc va lang vi cua tre*.