Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
va khanh » van khanh, va thanh, vu khanh
vinh cuu » sinh cua, dinh cu, tinh cua
dinh cuu » dinh chi
nam xuc » cam xuc, nam xua, nam thuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va

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 nang x ho. ((hieu quan) or (hieu qua)) nam xuc va khanh ((vinh cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x ho. ((hieu quan) OR (hieu qua)) nam xuc va khanh ((vinh cuu) OR (dinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x ho. ((hieu quan) or (hieu qua)) nam xuc va khanh ((vinh cuu) or (dinh cuu)) tre*.