Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chon vi cac snippets" » "chon vi code snippets", "chon voi cac snippets", "chon vai cac snippets", "chon va cac snippets", "cho vi cac snippets", "con vi cac snippets", "cuon vi cac 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: (((("chon vi cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chon vi cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chon vi cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chon vi cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.