Perhaps you should try some spelling variations:
khanh thai » nhanh thai, khanh thanh, khanh thuan
van khanh » van thanh, van hanh, van anh
cao tren » ca tren, cau tren, co tren
thai cao » tai cao, thoai cac, thuat cao
chat xuc » chat huu, cam xuc, chao xu
xuc van » duc van, luc van, vuc van
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
o hoi » co hoi, o hoc, o hoa
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 sach) or (su sach)) ky nang ((o hoi) or (o hai)). hieu ve chat xuc van khanh thai cao tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang ((o hoi) OR (o hai)). hieu ve chat xuc van khanh thai cao tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang ((o hoi) or (o hai)). hieu ve chat xuc van khanh thai cao tren*.