Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
quy trinh » qua trinh, quy dinh
hieu van » thien van, lieu va, hieu ve
dang xay » dang van, van xay
trinh vi » trinh va, trinh ve, trinh viet
xuc quy » duc quy, xuan quy
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
su tien » su kien, su hien, tu tieng

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 ky dang xay hoi. ((hieu va) or (hieu van)) cam xuc quy trinh vi ((cua triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang xay hoi. ((hieu va) OR (hieu van)) cam xuc quy trinh vi ((cua triet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: te sach ky dang xay hoi. ((hieu va) or (hieu van)) cam xuc quy trinh vi ((cua triet) or (su tien))*.