Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cham xuc » cam xuc, cham soc, pham duc
thanh va » thanh van, hanh va, thanh ha
khoa hoi » khoan hoi, khoa hoc, khoa doi
chat xuc » chat huu, cam xuc, chao xu
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hien tu » khien tu, dien tu
hoa hoi » hoa hoc, hoa doi, hoc hoi
ky cong » ke cong, ly cong, khu cong
va cua » va chua, via cua, ca cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky cong ((hoa hoi) OR (khoa hoi)). hien tu ((cham xuc) or (chat xuc)) van thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky cong ((hoa hoi) OR (khoa hoi)). hien tu ((cham xuc) OR (chat xuc)) van thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky cong ((hoa hoi) OR (khoa hoi)). hien tu ((cham xuc) or (chat xuc)) van thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ky cong ((hoa hoi) OR (khoa hoi)). hien tu ((cham xuc) or (chat xuc)) van thanh va cua te*.