Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
danh di » danh du, danh dien, danh gia
xanh di » vanh dai, xanh tai
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
nang o » nang co, nang ho, nang ro
ve cac » va cac, vien cac
o hoi » co hoi, o hoc, o hai
du va » dau va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sai ky nang o hoi. hieu ve cac du va ((danh di) or (xanh di)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky nang o hoi. hieu ve cac du va ((danh di) OR (xanh di)) cau tren*.