Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quang hoc du snippets" » "quang hoi du snippets", "quang huy du snippets", "nang hoc du snippets", "quang hoc duc snippets", "quang hoc dau snippets", "quang hoc dua 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: (((("quang hoc 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: (((("quang hoc du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quang hoc du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quang hoc du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.