Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tac danh do snippets" » "tac danh code snippets", "sach danh do snippets", "cac doanh do snippets", "cac dan do snippets", "tac dang do snippets", "tac danh co snippets", "tac danh di 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: (((("tac danh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac danh do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tac danh do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac danh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.