Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va
va hanh » va thanh, va danh, ban hanh
hai cua » thai cua, dai cua, hoi cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang x ho. ((hieu ve) or (hieu van)) pham duc ((va hanh) OR (van hanh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang x ho. ((hieu ve) OR (hieu van)) pham duc ((va hanh) OR (van hanh)) hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky nang x ho. ((hieu ve) or (hieu van)) pham duc ((va hanh) OR (van hanh)) hai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang x ho. ((hieu ve) or (hieu van)) pham duc ((va hanh) OR (van hanh)) hai cua te*.