Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hong du snippets" » "thi cong du snippets", "thi phuong du snippets", "thi hanh du snippets", "thi hong duc snippets", "thi hoang du snippets", "thi hang du 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: (((("thi hong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi hong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.