Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu ve » hieu va, hieu van
va hanh » va thanh, va danh, ban hanh
van cau » van dau, van hau, van chat
ve cam » ve cham, ve cac, va cam
va cau » va cac, va dau, va cao
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu ve cam xuc ((va hanh) or (van hanh)) ((va cau) OR (van cau)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu ve cam xuc ((va hanh) OR (van hanh)) ((va cau) OR (van cau)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang x hoi. hieu ve cam xuc ((va hanh) or (van hanh)) ((va cau) OR (van cau)) treo".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang x hoi. hieu ve cam xuc ((va hanh) or (van hanh)) ((va cau) OR (van cau)) treo*.