Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh ca » dan ca, doanh cua, danh cho
truc va » thuc va, thuc vat, trung va
qua cac » cua cac
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
tru va » tu va, trung va
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: tu sach y nang ((me hoi) or (ma hoa)). hieu qua cac ((tru va) OR (truc va)) danh ca cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((me hoi) OR (ma hoa)). hieu qua cac ((tru va) OR (truc va)) danh ca cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((me hoi) or (ma hoa)). hieu qua cac ((tru va) OR (truc va)) danh ca cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((me hoi) or (ma hoa)). hieu qua cac ((tru va) OR (truc va)) danh ca cua triet*.