Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thien van » thi van
thi hang » thi nang, thi hong, thi thanh
thi hanh » thi thanh
danh di » danh du, xanh di, danh dien
tu sach » thu sach, su sach, te sach
cuu tre » cua tre, cau tren, cau treo
loc va » hoc va
luc va » duc va, tuc va
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thi hang) or (thi hanh)) xa hoi. thien van thanh ((loc va) OR (luc va)) danh di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hang) OR (thi hanh)) xa hoi. thien van thanh ((loc va) OR (luc va)) danh di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thi hang) or (thi hanh)) xa hoi. thien van thanh ((loc va) OR (luc va)) danh di cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hang) or (thi hanh)) xa hoi. thien van thanh ((loc va) OR (luc va)) danh di cuu tre*.