Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
dang xay » dang van, van xay
truc va » thuc va, thuc vat, trung va
xanh de » hanh de, xanh di, thanh de
va xanh » va danh, va hanh, va anh
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
van cau » van dau, van hau, van chat

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 truc va xanh de ((cua triet) OR (su 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 cau truc va xanh de ((cua triet) OR (su 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 cau truc va xanh de ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang x) or (dang xay)) hoi. thi van cau truc va xanh de ((cua triet) OR (su triet))*.