Perhaps you should try some spelling variations:
tu cach » tu cac
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cao suc » cao su, cao duc
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
ve cao » va cao, ve bao, ve cac
cua te » cua tu
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: ((tu cach) or (su sach)) ky nang x hoi. hieu ve cao suc ((va hanh) OR (va danh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky nang x hoi. hieu ve cao suc ((va hanh) OR (va danh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (su sach)) ky nang x hoi. hieu ve cao suc ((va hanh) OR (va danh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky nang x hoi. hieu ve cao suc ((va hanh) OR (va danh)) vai cua te*.