Perhaps you should try some spelling variations:
ban hanh » ban hang
chat xuc » chat huu, cam xuc, chao xu
hieu van » hieu va, thien van, lieu va
van chat » cao chat
nang co » nang cao, nang doc, nang noi
sach ky » sac ky, sach ty, sach kem
va tinh » may tinh
cuu tre » cua tre, cau tren, cau treo
co hoi » co hoc, co loi
vi cuu » vi luu, vinh cuu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) OR (sach y)) nang co hoi. hieu van chat xuc ((ban hanh) or (va tinh)) vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) nang co hoi. hieu van chat xuc ((ban hanh) OR (va tinh)) vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) OR (sach y)) nang co hoi. hieu van chat xuc ((ban hanh) or (va tinh)) vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) OR (sach y)) nang co hoi. hieu van chat xuc ((ban hanh) or (va tinh)) vi cuu tre*.