Perhaps you should try some spelling variations:
cua tre » cua te, cuu tre, cua triet
luc ban » duc ban, luc bat, luc van
hanh de » hanh ve, hanh kem
cuc ban » cua ban, cac ban, cuu ban
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
sai ky » sac ky
de cua » le cua, te cua, dieu cua
te sai » te tai, te bai, te lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang xa hoi. ((hieu ve) or (hieu va)) cam ((luc ban) OR (cuc ban)) hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang xa hoi. ((hieu ve) OR (hieu va)) cam ((luc ban) OR (cuc ban)) hanh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky nang xa hoi. ((hieu ve) or (hieu va)) cam ((luc ban) OR (cuc ban)) hanh de cua tre".
• Adding a wildcard symbol may retrieve word variants: te sai ky nang xa hoi. ((hieu ve) or (hieu va)) cam ((luc ban) OR (cuc ban)) hanh de cua tre*.