Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
cuu tre » cua tre, cau tren, cau treo
luc ban » duc ban, cuc ban, luc bat
hanh de » hanh ve, hanh kem
cau luc » cau truc, cau phuc
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
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 dang xa hoi. hieu ve cau luc ban hanh de ((cua triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te tai)) ky dang xa hoi. hieu ve cau luc ban hanh de ((cua triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sai) OR (te tai)) ky dang xa hoi. hieu ve cau luc ban hanh de ((cua triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((te sai) OR (te tai)) ky dang xa hoi. hieu ve cau luc ban hanh de ((cua triet) or (cuu tre))*.