Perhaps you should try some spelling variations:
"thi moi chat snippets" » "thi moi code snippets", "thi moi nhat snippets", "thi voi chat snippets", "thi moi bat snippets", "thi mai chat snippets", "thi mo chat snippets", "thi hoai chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("thi moi chat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("thi moi chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( thi moi chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("thi moi chat snippets"))) or ("locating bug core snippets"))*.