Perhaps you should try some spelling variations:
thanh thai » thanh hai, thanh tai, nhanh thai
van thanh » ban thanh, van tuan
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
thai cua » than cua, tai cuc, tri cua
cua tren » dua tren, ca tren, cua tre
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
o hoa » do hoa, so hoa, o ha
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: te sach ky nang ((o hoa) or (o hai)). hieu vien cac xuc van thanh thai cua tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((o hoa) OR (o hai)). hieu vien cac xuc van thanh thai cua tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((o hoa) or (o hai)). hieu vien cac xuc van thanh thai cua tren*.