Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
lang xa » lang ha, dang xay, lang van
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, doc va, goc va
loc va » hoc va, luc va
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang x) or (lang xa)) hoi. lieu va cham ((soc va) OR (loc va)) dan vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang x) OR (lang xa)) hoi. lieu va cham ((soc va) OR (loc va)) dan vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang x) or (lang xa)) hoi. lieu va cham ((soc va) OR (loc va)) dan vi cua tre*".