Perhaps you should try some spelling variations:
dau trung » dac trung, dau trong, dai trung
cua triet » cua viet, su triet, va triet
thi nang » thi cong, ki nang, thi hanh
dang xay » dang van, van xay
trung va » truong va, trang va, trung ha
xanh di » danh di, vanh dai, xanh tai
va xanh » va danh, va hanh, va anh
te sach » toc sach
thi van » thi lan, thi hanh
di cua » dai cua, doi cua, de cua

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