Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
ta doanh » va doanh, ty doanh, toan doanh
toc sach » hoc sach, doc sach, thuoc sach
te doanh » te danh, de doanh, ty doanh
van cau » van dau, van hau, van chat
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cac toc » cac toi, cac nuoc, cac thoi
ve cac » va cac, vien cac

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) or (toc sach)) ky nang xa hoi. hieu ve cac toc ((ta doanh) or (te doanh)) van cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu ve cac toc ((ta doanh) OR (te doanh)) van cau tren.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang xa hoi. hieu ve cac toc ((ta doanh) or (te doanh)) van cau tren*.