Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chieu ve cac snippets" » "chieu ve code snippets", "hieu ve cac snippets", "chieu ke cac snippets", "thieu ve cac snippets", "chieu va cac snippets", "chieu vien 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: (((("chieu ve 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: (((("chieu ve cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chieu ve cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chieu ve cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.