Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi van tre snippets" » "thi van code snippets", "thi lan tre snippets", "thi hanh tre snippets", "thi nang tre snippets", "thi van tren snippets", "thi van te snippets", "thi ban tre 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 tre 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 tre snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi van tre snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi van tre snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.