Perhaps you should try some spelling variations:
dau trung » dac trung, dau trong, dai trung
dang xay » dang van, van xay
trung va » truong va, trang va, trung ha
danh dai » danh dau, danh di, danh sai
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
thi van » thi lan, thi hanh, thi nang
van dau » van dao, phan dau
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet

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 ma) or (dang xay)) hoi. thi van dau trung va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (dang xay)) hoi. thi van dau trung va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang ma) or (dang xay)) hoi. thi van dau trung va danh dai cua tre*.