Perhaps you should try some spelling variations:
cau trung » cau truong, cac trung, cao trung
dang xay » dang van, van xay
trung va » truong va, trang va, trung ha
cau tren » cu tren, dau tren, ca tren
thi van » thi lan, thi hanh, thi nang
van cau » van dau, van hau, van chat
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
cuu tre » cua tre, cau treo
te sach » toc sach

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 y ((nang x) or (dang xay)) hoi. thi van cau trung va xanh di ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang x) OR (dang xay)) hoi. thi van cau trung va xanh di ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang x) or (dang xay)) hoi. thi van cau trung va xanh di ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (dang xay)) hoi. thi van cau trung va xanh di ((cuu tre) OR (cau tren))*.