Perhaps you should try some spelling variations:
doanh vang » doanh van, doanh sang, doanh quang
vay doanh » van doanh, ly doanh, voi doanh
vang cua » mang cua, hang cua, tang cua
vien cac » vien bach, vien dai, vien da
toc sac » toc sach, toc san, hoc sach
tuc vay » tuc va, tu vay, tuc xay
cua tre » cua te, cuu tre, cua triet
dung ha » dung va, dung he, dung khoa
dang ha » dong ha, lang ha, tang ha
sac ky » cac ky, sai ky
ve cac » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky ((dang ha) or (dung ha)) hoi. hieu ((ve cac) OR (vien cac)) tuc vay doanh vang cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky ((dang ha) OR (dung ha)) hoi. hieu ((ve cac) OR (vien cac)) tuc vay doanh vang cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky ((dang ha) or (dung ha)) hoi. hieu ((ve cac) OR (vien cac)) tuc vay doanh vang cua tre*".