Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
va tinh » may tinh
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang x ho. hieu ve cac luc ((va hanh) or (va tinh)) vi ((cua tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang x ho. hieu ve cac luc ((va hanh) OR (va tinh)) vi ((cua tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x ho. hieu ve cac luc ((va hanh) or (va tinh)) vi ((cua tre) or (cau treo))*.