Perhaps you should try some spelling variations:
dang thanh » dong thanh, dang hanh, hoang thanh
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
duc dang » duc dung, duc dong, duc bang
lap cuu » cap cuu, lap cua
nam duc » nam duoc, pham duc, nam thuc
cuu tre » cua tre, cau tren, cau treo
lang xa » lang ha, dang xay, lang van
xu lang » cu lang, tu lang, xu dang

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) OR (toc sach)) xu lang xa hoi. ((lieu va) or (thien van)) nam duc dang thanh lap cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) xu lang xa hoi. ((lieu va) OR (thien van)) nam duc dang thanh lap cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) xu lang xa hoi. ((lieu va) or (thien van)) nam duc dang thanh lap cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) xu lang xa hoi. ((lieu va) or (thien van)) nam duc dang thanh lap cuu tre*.