Perhaps you should try some spelling variations:
cao trung » cao truong, tao trung, bao trung
ca trung » cua trung, cac trung, ba trung
danh ca » dan ca, doanh cua, danh cho
va danh » va dinh, va dan, va hanh
te sach » toc sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
me hoi » le hoi
ca cua » co 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 ((me hoi) or (ma hoa)). hieu va ((ca trung) OR (cao trung)) va danh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((me hoi) OR (ma hoa)). hieu va ((ca trung) OR (cao trung)) va danh ca cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((me hoi) or (ma hoa)). hieu va ((ca trung) OR (cao trung)) va danh ca cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((me hoi) or (ma hoa)). hieu va ((ca trung) OR (cao trung)) va danh ca cua tre*.