Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van khanh » van hanh, van anh, van phan
te sach » toc sach
thai cu » thai cua, thai xu, thi cu
cu tren » tu tren, dua tren
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
co hai » co dai, co hoi, o hai
ve cac » va cac, vien cac
o hoa » do hoa, so hoa, o ha

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 (co hai)). hieu ve cac xuc ((van khanh) or (van thanh)) thai cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((o hoa) OR (co hai)). hieu ve cac xuc ((van khanh) OR (van thanh)) thai cu tren.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((o hoa) or (co hai)). hieu ve cac xuc ((van khanh) or (van thanh)) thai cu tren*.