Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong tac du snippets" » "dong tac code snippets", "cong tac du snippets", "dong tai du snippets", "dong bac du snippets", "dong tac dau snippets", "dong cac du snippets", "dong tac da 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: (((("dong tac du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong tac du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dong tac du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tac du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.