Perhaps you should try some spelling variations:
van thang » van khang, van hang, van than
van thanh » ban thanh, van tuan
chua tre » chua tri, cua tre, chua trieu
nay duoc » nam duoc, nhan duoc, tao duoc
va chua » vua chua, ca chua, va chu
te sach » toc sach
ty hang » ly hang, ty xang, thi hang
ty lang » tay lang, ty xang, tu lang
va nay » va ngay, va cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty lang) or (ty hang)) xa hoi. lieu va nay duoc ((van thang) OR (van thanh)) va chua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty lang) OR (ty hang)) xa hoi. lieu va nay duoc ((van thang) OR (van thanh)) va chua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty lang) or (ty hang)) xa hoi. lieu va nay duoc ((van thang) OR (van thanh)) va chua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty lang) or (ty hang)) xa hoi. lieu va nay duoc ((van thang) OR (van thanh)) va chua tre*.