Perhaps you should try some spelling variations:
ban hanh » ban hang
cua viet » ca viet, hoa viet, cua vat
cac tru » cac tro, cac thu, cac tu
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua
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 ((cac tru) or (ca tru)) nang x hoi. hieu ve cam xuc ((va hanh) or (ban hanh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((cac tru) OR (ca tru)) nang x hoi. hieu ve cam xuc ((va hanh) OR (ban hanh)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: su ((cac tru) or (ca tru)) nang x hoi. hieu ve cam xuc ((va hanh) or (ban hanh)) vi cua viet*.