Sentence:  There is little evidence that existing public or private training programs have any great difficulty getting students to enroll in their programs , even though they must pay tuition , receive <WSD>no</WSD> subsistence payments , and are not guaranteed a job . 
Meaning of the word marked with <WSD> tags:  quantifier; used with either mass nouns or plural count nouns for indicating a complete or almost complete lack or zero quantity of