Perhaps you should try some spelling variations:
cong khoa » cong hoa, con khoa, dong khoa
van thanh » ban thanh
van tuan » van quan, van ban, anh tuan
khoa hoi » khoan hoi, khoa hoc, khoa doi
chieu tu » chieu tro, lieu tu, chu tu
cham xuc » chat xuc, cham soc, pham duc
cua tre » cua te, cuu tre, cua triet
ky cong » ke cong, ly cong, khu cong
van cua » vang cua, ban cua, dan cua
so sac » so sach, so dac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky cong khoa hoi. chieu tu ((cham xuc) or (cam xuc)) ((van thanh) or (van tuan)) van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky cong khoa hoi. chieu tu ((cham xuc) OR (cam xuc)) ((van thanh) OR (van tuan)) van cua tre.
• Adding a wildcard symbol may retrieve word variants: so sac ky cong khoa hoi. chieu tu ((cham xuc) or (cam xuc)) ((van thanh) or (van tuan)) van cua tre*.