Perhaps you should try some spelling variations:
hanh thi » nhanh thi, hanh thoi, anh thi
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
cu tren » tu tren, dua tren
so hai » son hai, su hai, so ha
ve cac » va cac, vien cac
thi cu » thi cuc
o hoa » do hoa, so hoa, o ha
o hai » co hai, o lai, _ hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((o hoa) or (((o hai) or (so hai)))). hieu ve cac xuc van hanh thi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((o hoa) OR (((o hai) OR (so hai)))). hieu ve cac xuc van hanh thi cu tren.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((o hoa) or (((o hai) or (so hai)))). hieu ve cac xuc van hanh thi cu tren*.