Perhaps you should try some spelling variations:
vu khanh » vu thanh, van khanh, duy khanh
hanh vai » hanh vi, hanh va, hanh tai
tang dan » tang van, tung dan, tang luan
vai cua » dai cua, hai cua, lai cua
dan hoi » dan hoc, dai hoi, van hoi
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
sac ky » sai 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 ((sac ky) or (cac ky)) tang dan hoi. hieu ((vu kham) OR (vu khanh)) xuc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) tang dan hoi. hieu ((vu kham) OR (vu khanh)) xuc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (cac ky)) tang dan hoi. hieu ((vu kham) OR (vu khanh)) xuc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) tang dan hoi. hieu ((vu kham) OR (vu khanh)) xuc va hanh vai cua te*.