Perhaps you should try some spelling variations:
cua viet » hoa viet, cua vat, cua dieu
danh hai » dang hai, lanh hai, manh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ha danh » han danh, hoa danh, ha anh
hieu le » hieu ve, hieu ly, tieu le
hieu he » hieu ve, hiem he, hieu hien
nang ma » tang ma, sang ma, nang cao
ca viet » va viet, co viet, hoa viet
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. ((hieu he) or (hieu le)) nam thu ha danh hai ((cua viet) OR (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((hieu he) OR (hieu le)) nam thu ha danh hai ((cua viet) OR (ca viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((hieu he) or (hieu le)) nam thu ha danh hai ((cua viet) OR (ca viet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. ((hieu he) or (hieu le)) nam thu ha danh hai ((cua viet) OR (ca viet))*.