Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi van he snippets" » "thi van code snippets", "thi lan he snippets", "thi hanh he snippets", "thi nang he snippets", "thi van hoe snippets", "thi van hue snippets", "thi van de 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: (((("thi van he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi van he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi van he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi van he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.