Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
doanh tang » doanh sang, doanh tong, doanh quang
toc sac » toc sach, toc san, hoc sach
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
ha hoi » hoa hoi, ha noi, xa hoi
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: toc sac ky dang ha hoi. hieu ve cac tuc va ((doanh tang) OR (doanh thanh)) ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky dang ha hoi. hieu ve cac tuc va ((doanh tang) OR (doanh thanh)) ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky dang ha hoi. hieu ve cac tuc va ((doanh tang) OR (doanh thanh)) ((cua tre) or (cua te))*".