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