Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat cuu » chat huu, chat cua, cham cuu
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
nang xa » nang x, lang xa, nang ma
danh vi » dinh vi, danh di, danh va
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang
cuu va » cuu van, cuu ve

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 xa hoi. hieu van chat cuu va ((danh vi) OR (hanh vi)) ((cuu tre) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu van chat cuu va ((danh vi) OR (hanh vi)) ((cuu tre) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu van chat cuu va ((danh vi) OR (hanh vi)) ((cuu tre) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu van chat cuu va ((danh vi) OR (hanh vi)) ((cuu tre) or (cua viet))*.