Perhaps you should try some spelling variations:
ban hanh » ban hang
cuu tre » cau tren, cau treo
luc ban » duc ban, cuc ban, luc bat
cua tre » cua te, cua triet, dua tren
hanh de » hanh ve, hanh kem
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cau » ke cau, va cau, ve cac
te sai » te bai, te lai, te hai

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) or (te tai)) ky nang xa hoi. hieu ve cau luc ban hanh de ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te tai)) ky nang xa hoi. hieu ve cau luc ban hanh de ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((te sai) or (te tai)) ky nang xa hoi. hieu ve cau luc ban hanh de ((cua tre) or (cuu tre))*.