Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
chat xuc » chat huu, chao xu, chat cua
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va, hieu van
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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) or (sach y)) nang co hoi. hieu ve ((cam xuc) or (chat xuc)) van hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach y)) nang co hoi. hieu ve ((cam xuc) OR (chat xuc)) van hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach y)) nang co hoi. hieu ve ((cam xuc) or (chat xuc)) van hanh vi cua tu*.