Perhaps you should try some spelling variations:
van khanh » van thanh, van hanh, van anh
than cua » nhan cua, thai cua, gian cua
cac xuc » cam xuc, cac nuoc, chat xuc
ban cua » ban quan
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
co hoi » co hoc, co loi
tu sac » tu sach, tu cac, tu san
o hai » co hai, so hai, o lai

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 ((co hoi) or (o hai)). hieu ve cac xuc van khanh ((than cua) OR (ban cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((co hoi) OR (o hai)). hieu ve cac xuc van khanh ((than cua) OR (ban cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((co hoi) or (o hai)). hieu ve cac xuc van khanh ((than cua) OR (ban cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((co hoi) or (o hai)). hieu ve cac xuc van khanh ((than cua) OR (ban cua)) tre*.