Perhaps you should try some spelling variations:
klausur die » klausur i, klausur ii, klausur iii
yuan cheng » yuan chang, huang cheng, yu cheng
china reza » china real, china ren
klausa die » klaue die
han china » hang china, than china, can china
yan wang » yuan wang, yang yang, qian wang
wong yue » wang yue, hong yu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yan wang) or (yuan cheng)) han china reza ((klausa die) OR (klausur die)) wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan wang) OR (yuan cheng)) han china reza ((klausa die) OR (klausur die)) wong yue ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yan wang) or (yuan cheng)) han china reza ((klausa die) OR (klausur die)) wong yue ;".
• Adding a wildcard symbol may retrieve word variants: ((yan wang) or (yuan cheng)) han china reza ((klausa die) OR (klausur die)) wong yue ;*.