Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cau xuc » cam xuc, cau truc, chat xuc
cau luc » cau truc, cau phuc
va hanh » va thanh, va danh, ban hanh
cuc tre » duc tre, cua tre, cuu tre

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

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