Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
xanh tai » hanh tai, anh tai, vanh tai
dau truc » cau truc, dai truc, doan truc
thi van » thi lan, thi hanh, thi nang
van dau » van dao, phan dau
truc va » thuc va, thuc vat, trung va
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 dau truc va ((xanh te) OR (xanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang x) OR (dang xay)) hoi. thi van dau truc va ((xanh te) OR (xanh tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang x) or (dang xay)) hoi. thi van dau truc va ((xanh te) OR (xanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (dang xay)) hoi. thi van dau truc va ((xanh te) OR (xanh tai)) cua triet*.