Perhaps you should try some spelling variations:
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
hoi cua » hoi chuc
sac ky » sai ky
va dan » ca dan, va dao, va dau
cua tu » cua tuc, cua su, cua cu
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 ((sac ky) or (cac ky)) nang x hoi. hieu ve pham duc ((va hanh) or (va dan)) hoi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang x hoi. hieu ve pham duc ((va hanh) OR (va dan)) hoi cua tu.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang x hoi. hieu ve pham duc ((va hanh) or (va dan)) hoi cua tu*.