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

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) OR (dau va)) ((danh di) or (xanh di)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sai ky nang o hoi. hieu ve cac ((du va) OR (dau va)) ((danh di) OR (xanh di)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sai ky nang o hoi. hieu ve cac ((du va) OR (dau va)) ((danh di) or (xanh di)) cuu tre*".