Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len minh chi snippets" » "lien minh chi snippets", "le minh chi snippets", "len tinh chi snippets", "len dinh chi snippets", "len linh chi snippets", "len minh chau snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("len minh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len minh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len minh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len minh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.