Perhaps you should try some spelling variations:
"chien tranh thong moi" » "chien tranh trong moi" (Expand Search), "chien trinh thong moi" (Expand Search), "chien nganh thong moi" (Expand Search), "chien tranh thon moi" (Expand Search), "chien tranh thong o" (Expand Search)
"chien tranh thong doi" » "chien tranh trong doi" (Expand Search), "chien trinh thong doi" (Expand Search), "chien nganh thong doi" (Expand Search), "chien tranh thong dai" (Expand Search), "chien tranh thong di" (Expand Search)
"chien tranh chong doi" » "chien thanh chuong doi" (Expand Search), "chien tran hong doi" (Expand Search), "chien tranh chong duoi" (Expand Search), "chien tranh chong toi" (Expand Search), "chien tranh khong doi" (Expand Search)

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: (("chien tranh thong moi") OR ((("chien tranh chong doi") OR ("chien tranh thong doi"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"chien tranh thong moi\") OR (((\"chien tranh chong doi\") OR (\"chien tranh thong doi\"))))".
• Removing quotes may allow a broader search: (( chien tranh thong moi ) OR ((( chien tranh chong doi ) OR ( chien tranh thong doi )))).
• Adding a wildcard symbol may retrieve word variants: (("chien tranh thong moi") OR ((("chien tranh chong doi") OR ("chien tranh thong doi"))))*.