Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
van hanh » van thanh, ban hanh, van anh
lap lai » lap tai, lay lai, lam lai
cam luc » cam xuc, cau luc
ky sang » ky nang, ky tang, duy sang
tai cua » thai cua, tai cuc, tri cua
ky dang » ky nang, ky danh
lap hai » lap tai, lap hoat, lanh hai
luc van » luoc van, luu van, duc van
hieu va » lieu va, hieu qua
so sac » so sach, so dac
va cam » va cham, va cac, va cao
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: so sac ((ky sang) or (ky dang)) ((lap hai) or (lap lai)). hieu va cam luc van hanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ((ky sang) OR (ky dang)) ((lap hai) OR (lap lai)). hieu va cam luc van hanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: so sac ((ky sang) or (ky dang)) ((lap hai) or (lap lai)). hieu va cam luc van hanh tai cua te*.